WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/mm/vhpt.c


/*
* Copyright (c) 2006 Jakub Vana
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
*   notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
*   notice, this list of conditions and the following disclaimer in the
*   documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
*   derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup ia64mm 
 * @{
 */
/** @file
*/
 
#include <arch/mm/vhpt.h>
#include <mm/frame.h>
#include <print.h>
 
static vhpt_entry_t* vhpt_base;
 
uintptr_t vhpt_set_up(void)
{
    vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA | FRAME_ATOMIC);
    if(!vhpt_base)
        panic("Kernel configured with VHPT but no memory for table.");
    vhpt_invalidate_all();
    return (uintptr_t) vhpt_base;
}
 
 
void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)
{
    region_register rr_save, rr;
    index_t vrn;
    rid_t rid;
    uint64_t tag;
 
    vhpt_entry_t *ventry;
 
 
    vrn = va >> VRN_SHIFT;
    rid = ASID2RID(asid, vrn);
                                                                                                               
  rr_save.word = rr_read(vrn);
  rr.word = rr_save.word;
  rr.map.rid = rid;
  rr_write(vrn, rr.word);
  srlz_i();
   
    ventry = (vhpt_entry_t *) thash(va);
  tag = ttag(va);
  rr_write(vrn, rr_save.word);
  srlz_i();
  srlz_d();
 
    ventry->word[0]=entry.word[0];
    ventry->word[1]=entry.word[1];
    ventry->present.tag.tag_word = tag;
   
 
}
 
void vhpt_invalidate_all()
{
    memsetb((uintptr_t)vhpt_base,1<<VHPT_WIDTH,0);
}
 
void vhpt_invalidate_asid(asid_t asid)
{
    vhpt_invalidate_all();
}
 
/** @}
 */
 

Rev 1888	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2006 Jakub Vana	2	* Copyright (c) 2006 Jakub Vana
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ia64mm	29	/** @addtogroup ia64mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/mm/vhpt.h>	35	#include <arch/mm/vhpt.h>
36	#include <mm/frame.h>	36	#include <mm/frame.h>
37	#include <print.h>	37	#include <print.h>
38		38
39	static vhpt_entry_t* vhpt_base;	39	static vhpt_entry_t* vhpt_base;
40		40
41	uintptr_t vhpt_set_up(void)	41	uintptr_t vhpt_set_up(void)
42	{	42	{
43	vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA \| FRAME_ATOMIC);	43	vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA \| FRAME_ATOMIC);
44	if(!vhpt_base)	44	if(!vhpt_base)
45	panic("Kernel configured with VHPT but no memory for table.");	45	panic("Kernel configured with VHPT but no memory for table.");
46	vhpt_invalidate_all();	46	vhpt_invalidate_all();
47	return (uintptr_t) vhpt_base;	47	return (uintptr_t) vhpt_base;
48	}	48	}
49		49
50		50
51	void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)	51	void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry)
52	{	52	{
53	region_register rr_save, rr;	53	region_register rr_save, rr;
54	index_t vrn;	54	index_t vrn;
55	rid_t rid;	55	rid_t rid;
56	uint64_t tag;	56	uint64_t tag;
57		57
58	vhpt_entry_t *ventry;	58	vhpt_entry_t *ventry;
59		59
60		60
61	vrn = va >> VRN_SHIFT;	61	vrn = va >> VRN_SHIFT;
62	rid = ASID2RID(asid, vrn);	62	rid = ASID2RID(asid, vrn);
63		63
64	rr_save.word = rr_read(vrn);	64	rr_save.word = rr_read(vrn);
65	rr.word = rr_save.word;	65	rr.word = rr_save.word;
66	rr.map.rid = rid;	66	rr.map.rid = rid;
67	rr_write(vrn, rr.word);	67	rr_write(vrn, rr.word);
68	srlz_i();	68	srlz_i();
69		69
70	ventry = (vhpt_entry_t *) thash(va);	70	ventry = (vhpt_entry_t *) thash(va);
71	tag = ttag(va);	71	tag = ttag(va);
72	rr_write(vrn, rr_save.word);	72	rr_write(vrn, rr_save.word);
73	srlz_i();	73	srlz_i();
74	srlz_d();	74	srlz_d();
75		75
76	ventry->word[0]=entry.word[0];	76	ventry->word[0]=entry.word[0];
77	ventry->word[1]=entry.word[1];	77	ventry->word[1]=entry.word[1];
78	ventry->present.tag.tag_word = tag;	78	ventry->present.tag.tag_word = tag;
79		79
80		80
81	}	81	}
82		82
83	void vhpt_invalidate_all()	83	void vhpt_invalidate_all()
84	{	84	{
85	memsetb((uintptr_t)vhpt_base,1<<VHPT_WIDTH,0);	85	memsetb((uintptr_t)vhpt_base,1<<VHPT_WIDTH,0);
86	}	86	}
87		87
88	void vhpt_invalidate_asid(asid_t asid)	88	void vhpt_invalidate_asid(asid_t asid)
89	{	89	{
90	vhpt_invalidate_all();	90	vhpt_invalidate_all();
91	}	91	}
92		92
93	/** @}	93	/** @}
94	*/	94	*/
95		95

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia64/src/mm/vhpt.c – Rev 1888 → 2071